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-rw-r--r--arch/mips/au1000/common/au1xxx_irqmap.c32
-rw-r--r--arch/mips/au1000/common/cputable.c3
-rw-r--r--arch/mips/au1000/common/dbdma.c298
-rw-r--r--arch/mips/au1000/common/irq.c4
-rw-r--r--arch/mips/au1000/common/usbdev.c12
-rw-r--r--arch/mips/au1000/pb1200/Makefile5
-rw-r--r--arch/mips/au1000/pb1200/board_setup.c187
-rw-r--r--arch/mips/au1000/pb1200/init.c69
-rw-r--r--arch/mips/au1000/pb1200/irqmap.c180
9 files changed, 685 insertions, 105 deletions
diff --git a/arch/mips/au1000/common/au1xxx_irqmap.c b/arch/mips/au1000/common/au1xxx_irqmap.c
index 8a0f39f..0b2c03c 100644
--- a/arch/mips/au1000/common/au1xxx_irqmap.c
+++ b/arch/mips/au1000/common/au1xxx_irqmap.c
@@ -173,14 +173,14 @@ au1xxx_irq_map_t au1xxx_ic0_map[] = {
{ AU1550_PSC1_INT, INTC_INT_HIGH_LEVEL, 0},
{ AU1550_PSC2_INT, INTC_INT_HIGH_LEVEL, 0},
{ AU1550_PSC3_INT, INTC_INT_HIGH_LEVEL, 0},
- { AU1550_TOY_INT, INTC_INT_RISE_EDGE, 0 },
- { AU1550_TOY_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
- { AU1550_TOY_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
- { AU1550_TOY_MATCH2_INT, INTC_INT_RISE_EDGE, 1 },
- { AU1550_RTC_INT, INTC_INT_RISE_EDGE, 0 },
- { AU1550_RTC_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
- { AU1550_RTC_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
- { AU1550_RTC_MATCH2_INT, INTC_INT_RISE_EDGE, 0 },
+ { AU1000_TOY_INT, INTC_INT_RISE_EDGE, 0 },
+ { AU1000_TOY_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
+ { AU1000_TOY_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
+ { AU1000_TOY_MATCH2_INT, INTC_INT_RISE_EDGE, 1 },
+ { AU1000_RTC_INT, INTC_INT_RISE_EDGE, 0 },
+ { AU1000_RTC_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
+ { AU1000_RTC_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
+ { AU1000_RTC_MATCH2_INT, INTC_INT_RISE_EDGE, 0 },
{ AU1550_NAND_INT, INTC_INT_RISE_EDGE, 0},
{ AU1550_USB_DEV_REQ_INT, INTC_INT_HIGH_LEVEL, 0 },
{ AU1550_USB_DEV_SUS_INT, INTC_INT_RISE_EDGE, 0 },
@@ -201,14 +201,14 @@ au1xxx_irq_map_t au1xxx_ic0_map[] = {
{ AU1200_PSC1_INT, INTC_INT_HIGH_LEVEL, 0},
{ AU1200_AES_INT, INTC_INT_HIGH_LEVEL, 0},
{ AU1200_CAMERA_INT, INTC_INT_HIGH_LEVEL, 0},
- { AU1200_TOY_INT, INTC_INT_RISE_EDGE, 0 },
- { AU1200_TOY_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
- { AU1200_TOY_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
- { AU1200_TOY_MATCH2_INT, INTC_INT_RISE_EDGE, 1 },
- { AU1200_RTC_INT, INTC_INT_RISE_EDGE, 0 },
- { AU1200_RTC_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
- { AU1200_RTC_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
- { AU1200_RTC_MATCH2_INT, INTC_INT_RISE_EDGE, 0 },
+ { AU1000_TOY_INT, INTC_INT_RISE_EDGE, 0 },
+ { AU1000_TOY_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
+ { AU1000_TOY_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
+ { AU1000_TOY_MATCH2_INT, INTC_INT_RISE_EDGE, 1 },
+ { AU1000_RTC_INT, INTC_INT_RISE_EDGE, 0 },
+ { AU1000_RTC_MATCH0_INT, INTC_INT_RISE_EDGE, 0 },
+ { AU1000_RTC_MATCH1_INT, INTC_INT_RISE_EDGE, 0 },
+ { AU1000_RTC_MATCH2_INT, INTC_INT_RISE_EDGE, 0 },
{ AU1200_NAND_INT, INTC_INT_RISE_EDGE, 0},
{ AU1200_USB_INT, INTC_INT_HIGH_LEVEL, 0 },
{ AU1200_LCD_INT, INTC_INT_HIGH_LEVEL, 0},
diff --git a/arch/mips/au1000/common/cputable.c b/arch/mips/au1000/common/cputable.c
index f5521df..4dbde82 100644
--- a/arch/mips/au1000/common/cputable.c
+++ b/arch/mips/au1000/common/cputable.c
@@ -37,7 +37,8 @@ struct cpu_spec cpu_specs[] = {
{ 0xffffffff, 0x02030203, "Au1100 BD", 0, 1 },
{ 0xffffffff, 0x02030204, "Au1100 BE", 0, 1 },
{ 0xffffffff, 0x03030200, "Au1550 AA", 0, 1 },
- { 0xffffffff, 0x04030200, "Au1200 AA", 0, 1 },
+ { 0xffffffff, 0x04030200, "Au1200 AB", 0, 0 },
+ { 0xffffffff, 0x04030201, "Au1200 AC", 0, 1 },
{ 0x00000000, 0x00000000, "Unknown Au1xxx", 1, 0 },
};
diff --git a/arch/mips/au1000/common/dbdma.c b/arch/mips/au1000/common/dbdma.c
index adfc317..cf10dc2 100644
--- a/arch/mips/au1000/common/dbdma.c
+++ b/arch/mips/au1000/common/dbdma.c
@@ -29,6 +29,7 @@
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
+
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/errno.h>
@@ -42,6 +43,8 @@
#include <asm/mach-au1x00/au1xxx_dbdma.h>
#include <asm/system.h>
+/* #include <linux/module.h> */
+
#if defined(CONFIG_SOC_AU1550) || defined(CONFIG_SOC_AU1200)
/*
@@ -55,43 +58,16 @@
* functions. The drivers allocate the data buffers and assign them
* to the descriptors.
*/
-static DEFINE_SPINLOCK(au1xxx_dbdma_spin_lock);
+static spinlock_t au1xxx_dbdma_spin_lock = SPIN_LOCK_UNLOCKED;
/* I couldn't find a macro that did this......
*/
#define ALIGN_ADDR(x, a) ((((u32)(x)) + (a-1)) & ~(a-1))
-static volatile dbdma_global_t *dbdma_gptr = (dbdma_global_t *)DDMA_GLOBAL_BASE;
-static int dbdma_initialized;
+static dbdma_global_t *dbdma_gptr = (dbdma_global_t *)DDMA_GLOBAL_BASE;
+static int dbdma_initialized=0;
static void au1xxx_dbdma_init(void);
-typedef struct dbdma_device_table {
- u32 dev_id;
- u32 dev_flags;
- u32 dev_tsize;
- u32 dev_devwidth;
- u32 dev_physaddr; /* If FIFO */
- u32 dev_intlevel;
- u32 dev_intpolarity;
-} dbdev_tab_t;
-
-typedef struct dbdma_chan_config {
- u32 chan_flags;
- u32 chan_index;
- dbdev_tab_t *chan_src;
- dbdev_tab_t *chan_dest;
- au1x_dma_chan_t *chan_ptr;
- au1x_ddma_desc_t *chan_desc_base;
- au1x_ddma_desc_t *get_ptr, *put_ptr, *cur_ptr;
- void *chan_callparam;
- void (*chan_callback)(int, void *, struct pt_regs *);
-} chan_tab_t;
-
-#define DEV_FLAGS_INUSE (1 << 0)
-#define DEV_FLAGS_ANYUSE (1 << 1)
-#define DEV_FLAGS_OUT (1 << 2)
-#define DEV_FLAGS_IN (1 << 3)
-
static dbdev_tab_t dbdev_tab[] = {
#ifdef CONFIG_SOC_AU1550
/* UARTS */
@@ -157,13 +133,13 @@ static dbdev_tab_t dbdev_tab[] = {
{ DSCR_CMD0_MAE_BOTH, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
{ DSCR_CMD0_LCD, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
- { DSCR_CMD0_SDMS_TX0, DEV_FLAGS_OUT, 0, 0, 0x00000000, 0, 0 },
- { DSCR_CMD0_SDMS_RX0, DEV_FLAGS_IN, 0, 0, 0x00000000, 0, 0 },
- { DSCR_CMD0_SDMS_TX1, DEV_FLAGS_OUT, 0, 0, 0x00000000, 0, 0 },
- { DSCR_CMD0_SDMS_RX1, DEV_FLAGS_IN, 0, 0, 0x00000000, 0, 0 },
+ { DSCR_CMD0_SDMS_TX0, DEV_FLAGS_OUT, 4, 8, 0x10600000, 0, 0 },
+ { DSCR_CMD0_SDMS_RX0, DEV_FLAGS_IN, 4, 8, 0x10600004, 0, 0 },
+ { DSCR_CMD0_SDMS_TX1, DEV_FLAGS_OUT, 4, 8, 0x10680000, 0, 0 },
+ { DSCR_CMD0_SDMS_RX1, DEV_FLAGS_IN, 4, 8, 0x10680004, 0, 0 },
- { DSCR_CMD0_AES_TX, DEV_FLAGS_OUT, 0, 0, 0x00000000, 0, 0 },
- { DSCR_CMD0_AES_RX, DEV_FLAGS_IN, 0, 0, 0x00000000, 0, 0 },
+ { DSCR_CMD0_AES_RX, DEV_FLAGS_IN , 4, 32, 0x10300008, 0, 0 },
+ { DSCR_CMD0_AES_TX, DEV_FLAGS_OUT, 4, 32, 0x10300004, 0, 0 },
{ DSCR_CMD0_PSC0_TX, DEV_FLAGS_OUT, 0, 0, 0x11a0001c, 0, 0 },
{ DSCR_CMD0_PSC0_RX, DEV_FLAGS_IN, 0, 0, 0x11a0001c, 0, 0 },
@@ -173,9 +149,9 @@ static dbdev_tab_t dbdev_tab[] = {
{ DSCR_CMD0_PSC1_RX, DEV_FLAGS_IN, 0, 0, 0x11b0001c, 0, 0 },
{ DSCR_CMD0_PSC1_SYNC, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
- { DSCR_CMD0_CIM_RXA, DEV_FLAGS_IN, 0, 0, 0x00000000, 0, 0 },
- { DSCR_CMD0_CIM_RXB, DEV_FLAGS_IN, 0, 0, 0x00000000, 0, 0 },
- { DSCR_CMD0_CIM_RXC, DEV_FLAGS_IN, 0, 0, 0x00000000, 0, 0 },
+ { DSCR_CMD0_CIM_RXA, DEV_FLAGS_IN, 0, 32, 0x14004020, 0, 0 },
+ { DSCR_CMD0_CIM_RXB, DEV_FLAGS_IN, 0, 32, 0x14004040, 0, 0 },
+ { DSCR_CMD0_CIM_RXC, DEV_FLAGS_IN, 0, 32, 0x14004060, 0, 0 },
{ DSCR_CMD0_CIM_SYNC, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
{ DSCR_CMD0_NAND_FLASH, DEV_FLAGS_IN, 0, 0, 0x00000000, 0, 0 },
@@ -184,6 +160,24 @@ static dbdev_tab_t dbdev_tab[] = {
{ DSCR_CMD0_THROTTLE, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
{ DSCR_CMD0_ALWAYS, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 },
+
+ /* Provide 16 user definable device types */
+ { 0, 0, 0, 0, 0, 0, 0 },
+ { 0, 0, 0, 0, 0, 0, 0 },
+ { 0, 0, 0, 0, 0, 0, 0 },
+ { 0, 0, 0, 0, 0, 0, 0 },
+ { 0, 0, 0, 0, 0, 0, 0 },
+ { 0, 0, 0, 0, 0, 0, 0 },
+ { 0, 0, 0, 0, 0, 0, 0 },
+ { 0, 0, 0, 0, 0, 0, 0 },
+ { 0, 0, 0, 0, 0, 0, 0 },
+ { 0, 0, 0, 0, 0, 0, 0 },
+ { 0, 0, 0, 0, 0, 0, 0 },
+ { 0, 0, 0, 0, 0, 0, 0 },
+ { 0, 0, 0, 0, 0, 0, 0 },
+ { 0, 0, 0, 0, 0, 0, 0 },
+ { 0, 0, 0, 0, 0, 0, 0 },
+ { 0, 0, 0, 0, 0, 0, 0 },
};
#define DBDEV_TAB_SIZE (sizeof(dbdev_tab) / sizeof(dbdev_tab_t))
@@ -203,6 +197,30 @@ find_dbdev_id (u32 id)
return NULL;
}
+u32
+au1xxx_ddma_add_device(dbdev_tab_t *dev)
+{
+ u32 ret = 0;
+ dbdev_tab_t *p=NULL;
+ static u16 new_id=0x1000;
+
+ p = find_dbdev_id(0);
+ if ( NULL != p )
+ {
+ memcpy(p, dev, sizeof(dbdev_tab_t));
+ p->dev_id = DSCR_DEV2CUSTOM_ID(new_id,dev->dev_id);
+ ret = p->dev_id;
+ new_id++;
+#if 0
+ printk("add_device: id:%x flags:%x padd:%x\n",
+ p->dev_id, p->dev_flags, p->dev_physaddr );
+#endif
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL(au1xxx_ddma_add_device);
+
/* Allocate a channel and return a non-zero descriptor if successful.
*/
u32
@@ -215,7 +233,7 @@ au1xxx_dbdma_chan_alloc(u32 srcid, u32 destid,
int i;
dbdev_tab_t *stp, *dtp;
chan_tab_t *ctp;
- volatile au1x_dma_chan_t *cp;
+ au1x_dma_chan_t *cp;
/* We do the intialization on the first channel allocation.
* We have to wait because of the interrupt handler initialization
@@ -225,9 +243,6 @@ au1xxx_dbdma_chan_alloc(u32 srcid, u32 destid,
au1xxx_dbdma_init();
dbdma_initialized = 1;
- if ((srcid > DSCR_NDEV_IDS) || (destid > DSCR_NDEV_IDS))
- return 0;
-
if ((stp = find_dbdev_id(srcid)) == NULL) return 0;
if ((dtp = find_dbdev_id(destid)) == NULL) return 0;
@@ -269,9 +284,9 @@ au1xxx_dbdma_chan_alloc(u32 srcid, u32 destid,
/* If kmalloc fails, it is caught below same
* as a channel not available.
*/
- ctp = kmalloc(sizeof(chan_tab_t), GFP_KERNEL);
+ ctp = (chan_tab_t *)
+ kmalloc(sizeof(chan_tab_t), GFP_KERNEL);
chan_tab_ptr[i] = ctp;
- ctp->chan_index = chan = i;
break;
}
}
@@ -279,10 +294,11 @@ au1xxx_dbdma_chan_alloc(u32 srcid, u32 destid,
if (ctp != NULL) {
memset(ctp, 0, sizeof(chan_tab_t));
+ ctp->chan_index = chan = i;
dcp = DDMA_CHANNEL_BASE;
dcp += (0x0100 * chan);
ctp->chan_ptr = (au1x_dma_chan_t *)dcp;
- cp = (volatile au1x_dma_chan_t *)dcp;
+ cp = (au1x_dma_chan_t *)dcp;
ctp->chan_src = stp;
ctp->chan_dest = dtp;
ctp->chan_callback = callback;
@@ -299,6 +315,9 @@ au1xxx_dbdma_chan_alloc(u32 srcid, u32 destid,
i |= DDMA_CFG_DED;
if (dtp->dev_intpolarity)
i |= DDMA_CFG_DP;
+ if ((stp->dev_flags & DEV_FLAGS_SYNC) ||
+ (dtp->dev_flags & DEV_FLAGS_SYNC))
+ i |= DDMA_CFG_SYNC;
cp->ddma_cfg = i;
au_sync();
@@ -309,14 +328,14 @@ au1xxx_dbdma_chan_alloc(u32 srcid, u32 destid,
rv = (u32)(&chan_tab_ptr[chan]);
}
else {
- /* Release devices.
- */
+ /* Release devices */
stp->dev_flags &= ~DEV_FLAGS_INUSE;
dtp->dev_flags &= ~DEV_FLAGS_INUSE;
}
}
return rv;
}
+EXPORT_SYMBOL(au1xxx_dbdma_chan_alloc);
/* Set the device width if source or destination is a FIFO.
* Should be 8, 16, or 32 bits.
@@ -344,6 +363,7 @@ au1xxx_dbdma_set_devwidth(u32 chanid, int bits)
return rv;
}
+EXPORT_SYMBOL(au1xxx_dbdma_set_devwidth);
/* Allocate a descriptor ring, initializing as much as possible.
*/
@@ -370,7 +390,8 @@ au1xxx_dbdma_ring_alloc(u32 chanid, int entries)
* and if we try that first we are likely to not waste larger
* slabs of memory.
*/
- desc_base = (u32)kmalloc(entries * sizeof(au1x_ddma_desc_t), GFP_KERNEL);
+ desc_base = (u32)kmalloc(entries * sizeof(au1x_ddma_desc_t),
+ GFP_KERNEL|GFP_DMA);
if (desc_base == 0)
return 0;
@@ -381,7 +402,7 @@ au1xxx_dbdma_ring_alloc(u32 chanid, int entries)
kfree((const void *)desc_base);
i = entries * sizeof(au1x_ddma_desc_t);
i += (sizeof(au1x_ddma_desc_t) - 1);
- if ((desc_base = (u32)kmalloc(i, GFP_KERNEL)) == 0)
+ if ((desc_base = (u32)kmalloc(i, GFP_KERNEL|GFP_DMA)) == 0)
return 0;
desc_base = ALIGN_ADDR(desc_base, sizeof(au1x_ddma_desc_t));
@@ -461,9 +482,14 @@ au1xxx_dbdma_ring_alloc(u32 chanid, int entries)
/* If source input is fifo, set static address.
*/
if (stp->dev_flags & DEV_FLAGS_IN) {
- src0 = stp->dev_physaddr;
+ if ( stp->dev_flags & DEV_FLAGS_BURSTABLE )
+ src1 |= DSCR_SRC1_SAM(DSCR_xAM_BURST);
+ else
src1 |= DSCR_SRC1_SAM(DSCR_xAM_STATIC);
+
}
+ if (stp->dev_physaddr)
+ src0 = stp->dev_physaddr;
/* Set up dest1. For now, assume no stride and increment.
* A channel attribute update can change this later.
@@ -487,10 +513,18 @@ au1xxx_dbdma_ring_alloc(u32 chanid, int entries)
/* If destination output is fifo, set static address.
*/
if (dtp->dev_flags & DEV_FLAGS_OUT) {
- dest0 = dtp->dev_physaddr;
+ if ( dtp->dev_flags & DEV_FLAGS_BURSTABLE )
+ dest1 |= DSCR_DEST1_DAM(DSCR_xAM_BURST);
+ else
dest1 |= DSCR_DEST1_DAM(DSCR_xAM_STATIC);
}
+ if (dtp->dev_physaddr)
+ dest0 = dtp->dev_physaddr;
+#if 0
+ printk("did:%x sid:%x cmd0:%x cmd1:%x source0:%x source1:%x dest0:%x dest1:%x\n",
+ dtp->dev_id, stp->dev_id, cmd0, cmd1, src0, src1, dest0, dest1 );
+#endif
for (i=0; i<entries; i++) {
dp->dscr_cmd0 = cmd0;
dp->dscr_cmd1 = cmd1;
@@ -499,6 +533,7 @@ au1xxx_dbdma_ring_alloc(u32 chanid, int entries)
dp->dscr_dest0 = dest0;
dp->dscr_dest1 = dest1;
dp->dscr_stat = 0;
+ dp->sw_context = dp->sw_status = 0;
dp->dscr_nxtptr = DSCR_NXTPTR(virt_to_phys(dp + 1));
dp++;
}
@@ -511,13 +546,14 @@ au1xxx_dbdma_ring_alloc(u32 chanid, int entries)
return (u32)(ctp->chan_desc_base);
}
+EXPORT_SYMBOL(au1xxx_dbdma_ring_alloc);
/* Put a source buffer into the DMA ring.
* This updates the source pointer and byte count. Normally used
* for memory to fifo transfers.
*/
u32
-au1xxx_dbdma_put_source(u32 chanid, void *buf, int nbytes)
+_au1xxx_dbdma_put_source(u32 chanid, void *buf, int nbytes, u32 flags)
{
chan_tab_t *ctp;
au1x_ddma_desc_t *dp;
@@ -544,24 +580,40 @@ au1xxx_dbdma_put_source(u32 chanid, void *buf, int nbytes)
*/
dp->dscr_source0 = virt_to_phys(buf);
dp->dscr_cmd1 = nbytes;
- dp->dscr_cmd0 |= DSCR_CMD0_V; /* Let it rip */
- ctp->chan_ptr->ddma_dbell = 0xffffffff; /* Make it go */
-
+ /* Check flags */
+ if (flags & DDMA_FLAGS_IE)
+ dp->dscr_cmd0 |= DSCR_CMD0_IE;
+ if (flags & DDMA_FLAGS_NOIE)
+ dp->dscr_cmd0 &= ~DSCR_CMD0_IE;
/* Get next descriptor pointer.
*/
ctp->put_ptr = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
+ /*
+ * There is an errata on the Au1200/Au1550 parts that could result
+ * in "stale" data being DMA'd. It has to do with the snoop logic on
+ * the dache eviction buffer. NONCOHERENT_IO is on by default for
+ * these parts. If it is fixedin the future, these dma_cache_inv will
+ * just be nothing more than empty macros. See io.h.
+ * */
+ dma_cache_wback_inv(buf,nbytes);
+ dp->dscr_cmd0 |= DSCR_CMD0_V; /* Let it rip */
+ au_sync();
+ dma_cache_wback_inv(dp, sizeof(dp));
+ ctp->chan_ptr->ddma_dbell = 0;
+
/* return something not zero.
*/
return nbytes;
}
+EXPORT_SYMBOL(_au1xxx_dbdma_put_source);
/* Put a destination buffer into the DMA ring.
* This updates the destination pointer and byte count. Normally used
* to place an empty buffer into the ring for fifo to memory transfers.
*/
u32
-au1xxx_dbdma_put_dest(u32 chanid, void *buf, int nbytes)
+_au1xxx_dbdma_put_dest(u32 chanid, void *buf, int nbytes, u32 flags)
{
chan_tab_t *ctp;
au1x_ddma_desc_t *dp;
@@ -583,11 +635,33 @@ au1xxx_dbdma_put_dest(u32 chanid, void *buf, int nbytes)
if (dp->dscr_cmd0 & DSCR_CMD0_V)
return 0;
- /* Load up buffer address and byte count.
- */
+ /* Load up buffer address and byte count */
+
+ /* Check flags */
+ if (flags & DDMA_FLAGS_IE)
+ dp->dscr_cmd0 |= DSCR_CMD0_IE;
+ if (flags & DDMA_FLAGS_NOIE)
+ dp->dscr_cmd0 &= ~DSCR_CMD0_IE;
+
dp->dscr_dest0 = virt_to_phys(buf);
dp->dscr_cmd1 = nbytes;
+#if 0
+ printk("cmd0:%x cmd1:%x source0:%x source1:%x dest0:%x dest1:%x\n",
+ dp->dscr_cmd0, dp->dscr_cmd1, dp->dscr_source0,
+ dp->dscr_source1, dp->dscr_dest0, dp->dscr_dest1 );
+#endif
+ /*
+ * There is an errata on the Au1200/Au1550 parts that could result in
+ * "stale" data being DMA'd. It has to do with the snoop logic on the
+ * dache eviction buffer. NONCOHERENT_IO is on by default for these
+ * parts. If it is fixedin the future, these dma_cache_inv will just
+ * be nothing more than empty macros. See io.h.
+ * */
+ dma_cache_inv(buf,nbytes);
dp->dscr_cmd0 |= DSCR_CMD0_V; /* Let it rip */
+ au_sync();
+ dma_cache_wback_inv(dp, sizeof(dp));
+ ctp->chan_ptr->ddma_dbell = 0;
/* Get next descriptor pointer.
*/
@@ -597,6 +671,7 @@ au1xxx_dbdma_put_dest(u32 chanid, void *buf, int nbytes)
*/
return nbytes;
}
+EXPORT_SYMBOL(_au1xxx_dbdma_put_dest);
/* Get a destination buffer into the DMA ring.
* Normally used to get a full buffer from the ring during fifo
@@ -646,7 +721,7 @@ void
au1xxx_dbdma_stop(u32 chanid)
{
chan_tab_t *ctp;
- volatile au1x_dma_chan_t *cp;
+ au1x_dma_chan_t *cp;
int halt_timeout = 0;
ctp = *((chan_tab_t **)chanid);
@@ -666,6 +741,7 @@ au1xxx_dbdma_stop(u32 chanid)
cp->ddma_stat |= (DDMA_STAT_DB | DDMA_STAT_V);
au_sync();
}
+EXPORT_SYMBOL(au1xxx_dbdma_stop);
/* Start using the current descriptor pointer. If the dbdma encounters
* a not valid descriptor, it will stop. In this case, we can just
@@ -675,17 +751,17 @@ void
au1xxx_dbdma_start(u32 chanid)
{
chan_tab_t *ctp;
- volatile au1x_dma_chan_t *cp;
+ au1x_dma_chan_t *cp;
ctp = *((chan_tab_t **)chanid);
-
cp = ctp->chan_ptr;
cp->ddma_desptr = virt_to_phys(ctp->cur_ptr);
cp->ddma_cfg |= DDMA_CFG_EN; /* Enable channel */
au_sync();
- cp->ddma_dbell = 0xffffffff; /* Make it go */
+ cp->ddma_dbell = 0;
au_sync();
}
+EXPORT_SYMBOL(au1xxx_dbdma_start);
void
au1xxx_dbdma_reset(u32 chanid)
@@ -704,15 +780,21 @@ au1xxx_dbdma_reset(u32 chanid)
do {
dp->dscr_cmd0 &= ~DSCR_CMD0_V;
+ /* reset our SW status -- this is used to determine
+ * if a descriptor is in use by upper level SW. Since
+ * posting can reset 'V' bit.
+ */
+ dp->sw_status = 0;
dp = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
} while (dp != ctp->chan_desc_base);
}
+EXPORT_SYMBOL(au1xxx_dbdma_reset);
u32
au1xxx_get_dma_residue(u32 chanid)
{
chan_tab_t *ctp;
- volatile au1x_dma_chan_t *cp;
+ au1x_dma_chan_t *cp;
u32 rv;
ctp = *((chan_tab_t **)chanid);
@@ -747,15 +829,16 @@ au1xxx_dbdma_chan_free(u32 chanid)
kfree(ctp);
}
+EXPORT_SYMBOL(au1xxx_dbdma_chan_free);
-static irqreturn_t
+static void
dbdma_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
- u32 intstat;
+ u32 intstat, flags;
u32 chan_index;
chan_tab_t *ctp;
au1x_ddma_desc_t *dp;
- volatile au1x_dma_chan_t *cp;
+ au1x_dma_chan_t *cp;
intstat = dbdma_gptr->ddma_intstat;
au_sync();
@@ -774,19 +857,26 @@ dbdma_interrupt(int irq, void *dev_id, struct pt_regs *regs)
(ctp->chan_callback)(irq, ctp->chan_callparam, regs);
ctp->cur_ptr = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
-
- return IRQ_HANDLED;
}
-static void
-au1xxx_dbdma_init(void)
+static void au1xxx_dbdma_init(void)
{
+ int irq_nr;
+
dbdma_gptr->ddma_config = 0;
dbdma_gptr->ddma_throttle = 0;
dbdma_gptr->ddma_inten = 0xffff;
au_sync();
- if (request_irq(AU1550_DDMA_INT, dbdma_interrupt, SA_INTERRUPT,
+#if defined(CONFIG_SOC_AU1550)
+ irq_nr = AU1550_DDMA_INT;
+#elif defined(CONFIG_SOC_AU1200)
+ irq_nr = AU1200_DDMA_INT;
+#else
+ #error Unknown Au1x00 SOC
+#endif
+
+ if (request_irq(irq_nr, dbdma_interrupt, SA_INTERRUPT,
"Au1xxx dbdma", (void *)dbdma_gptr))
printk("Can't get 1550 dbdma irq");
}
@@ -797,7 +887,8 @@ au1xxx_dbdma_dump(u32 chanid)
chan_tab_t *ctp;
au1x_ddma_desc_t *dp;
dbdev_tab_t *stp, *dtp;
- volatile au1x_dma_chan_t *cp;
+ au1x_dma_chan_t *cp;
+ u32 i = 0;
ctp = *((chan_tab_t **)chanid);
stp = ctp->chan_src;
@@ -822,15 +913,64 @@ au1xxx_dbdma_dump(u32 chanid)
dp = ctp->chan_desc_base;
do {
- printk("dp %08x, cmd0 %08x, cmd1 %08x\n",
- (u32)dp, dp->dscr_cmd0, dp->dscr_cmd1);
- printk("src0 %08x, src1 %08x, dest0 %08x\n",
- dp->dscr_source0, dp->dscr_source1, dp->dscr_dest0);
- printk("dest1 %08x, stat %08x, nxtptr %08x\n",
- dp->dscr_dest1, dp->dscr_stat, dp->dscr_nxtptr);
+ printk("Dp[%d]= %08x, cmd0 %08x, cmd1 %08x\n",
+ i++, (u32)dp, dp->dscr_cmd0, dp->dscr_cmd1);
+ printk("src0 %08x, src1 %08x, dest0 %08x, dest1 %08x\n",
+ dp->dscr_source0, dp->dscr_source1, dp->dscr_dest0, dp->dscr_dest1);
+ printk("stat %08x, nxtptr %08x\n",
+ dp->dscr_stat, dp->dscr_nxtptr);
dp = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
} while (dp != ctp->chan_desc_base);
}
+/* Put a descriptor into the DMA ring.
+ * This updates the source/destination pointers and byte count.
+ */
+u32
+au1xxx_dbdma_put_dscr(u32 chanid, au1x_ddma_desc_t *dscr )
+{
+ chan_tab_t *ctp;
+ au1x_ddma_desc_t *dp;
+ u32 nbytes=0;
+
+ /* I guess we could check this to be within the
+ * range of the table......
+ */
+ ctp = *((chan_tab_t **)chanid);
+
+ /* We should have multiple callers for a particular channel,
+ * an interrupt doesn't affect this pointer nor the descriptor,
+ * so no locking should be needed.
+ */
+ dp = ctp->put_ptr;
+
+ /* If the descriptor is valid, we are way ahead of the DMA
+ * engine, so just return an error condition.
+ */
+ if (dp->dscr_cmd0 & DSCR_CMD0_V)
+ return 0;
+
+ /* Load up buffer addresses and byte count.
+ */
+ dp->dscr_dest0 = dscr->dscr_dest0;
+ dp->dscr_source0 = dscr->dscr_source0;
+ dp->dscr_dest1 = dscr->dscr_dest1;
+ dp->dscr_source1 = dscr->dscr_source1;
+ dp->dscr_cmd1 = dscr->dscr_cmd1;
+ nbytes = dscr->dscr_cmd1;
+ /* Allow the caller to specifiy if an interrupt is generated */
+ dp->dscr_cmd0 &= ~DSCR_CMD0_IE;
+ dp->dscr_cmd0 |= dscr->dscr_cmd0 | DSCR_CMD0_V;
+ ctp->chan_ptr->ddma_dbell = 0;
+
+ /* Get next descriptor pointer.
+ */
+ ctp->put_ptr = phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
+
+ /* return something not zero.
+ */
+ return nbytes;
+}
+
#endif /* defined(CONFIG_SOC_AU1550) || defined(CONFIG_SOC_AU1200) */
diff --git a/arch/mips/au1000/common/irq.c b/arch/mips/au1000/common/irq.c
index 0b912f7..ebf93bd 100644
--- a/arch/mips/au1000/common/irq.c
+++ b/arch/mips/au1000/common/irq.c
@@ -488,7 +488,7 @@ void intc0_req0_irqdispatch(struct pt_regs *regs)
intc0_req0 |= au_readl(IC0_REQ0INT);
if (!intc0_req0) return;
-
+#ifdef AU1000_USB_DEV_REQ_INT
/*
* Because of the tight timing of SETUP token to reply
* transactions, the USB devices-side packet complete
@@ -499,7 +499,7 @@ void intc0_req0_irqdispatch(struct pt_regs *regs)
do_IRQ(AU1000_USB_DEV_REQ_INT, regs);
return;
}
-
+#endif
irq = au_ffs(intc0_req0) - 1;
intc0_req0 &= ~(1<<irq);
do_IRQ(irq, regs);
diff --git a/arch/mips/au1000/common/usbdev.c b/arch/mips/au1000/common/usbdev.c
index 447a9a4..0b21bed 100644
--- a/arch/mips/au1000/common/usbdev.c
+++ b/arch/mips/au1000/common/usbdev.c
@@ -1005,11 +1005,11 @@ process_ep0_receive (struct usb_dev* dev)
#endif
dev->ep0_stage = SETUP_STAGE;
break;
- }
+ }
spin_unlock(&ep0->lock);
- // we're done processing the packet, free it
- kfree(pkt);
+ // we're done processing the packet, free it
+ kfree(pkt);
}
@@ -1072,8 +1072,7 @@ dma_done_ep0_intr(int irq, void *dev_id, struct pt_regs *regs)
clear_dma_done1(ep0->indma);
pkt = send_packet_complete(ep0);
- if (pkt)
- kfree(pkt);
+ kfree(pkt);
}
/*
@@ -1302,8 +1301,7 @@ usbdev_exit(void)
endpoint_flush(ep);
}
- if (usbdev.full_conf_desc)
- kfree(usbdev.full_conf_desc);
+ kfree(usbdev.full_conf_desc);
}
int
diff --git a/arch/mips/au1000/pb1200/Makefile b/arch/mips/au1000/pb1200/Makefile
new file mode 100644
index 0000000..22b673c
--- /dev/null
+++ b/arch/mips/au1000/pb1200/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for the Alchemy Semiconductor PB1200 board.
+#
+
+lib-y := init.o board_setup.o irqmap.o
diff --git a/arch/mips/au1000/pb1200/board_setup.c b/arch/mips/au1000/pb1200/board_setup.c
new file mode 100644
index 0000000..209a07c
--- /dev/null
+++ b/arch/mips/au1000/pb1200/board_setup.c
@@ -0,0 +1,187 @@
+/*
+ *
+ * BRIEF MODULE DESCRIPTION
+ * Alchemy Pb1200/Db1200 board setup.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/sched.h>
+#include <linux/ioport.h>
+#include <linux/mm.h>
+#include <linux/console.h>
+#include <linux/mc146818rtc.h>
+#include <linux/delay.h>
+
+#if defined(CONFIG_BLK_DEV_IDE_AU1XXX)
+#include <linux/ide.h>
+#endif
+
+#include <asm/cpu.h>
+#include <asm/bootinfo.h>
+#include <asm/irq.h>
+#include <asm/mipsregs.h>
+#include <asm/reboot.h>
+#include <asm/pgtable.h>
+#include <asm/mach-au1x00/au1000.h>
+#include <asm/mach-au1x00/au1xxx_dbdma.h>
+
+#ifdef CONFIG_MIPS_PB1200
+#include <asm/mach-pb1x00/pb1200.h>
+#endif
+
+#ifdef CONFIG_MIPS_DB1200
+#include <asm/mach-db1x00/db1200.h>
+#define PB1200_ETH_INT DB1200_ETH_INT
+#define PB1200_IDE_INT DB1200_IDE_INT
+#endif
+
+extern void _board_init_irq(void);
+extern void (*board_init_irq)(void);
+
+#ifdef CONFIG_BLK_DEV_IDE_AU1XXX
+extern struct ide_ops *ide_ops;
+extern struct ide_ops au1xxx_ide_ops;
+extern u32 au1xxx_ide_virtbase;
+extern u64 au1xxx_ide_physbase;
+extern int au1xxx_ide_irq;
+
+u32 led_base_addr;
+/* Ddma */
+chan_tab_t *ide_read_ch, *ide_write_ch;
+u32 au1xxx_ide_ddma_enable = 0, switch4ddma = 1; // PIO+ddma
+
+dbdev_tab_t new_dbdev_tab_element = { DSCR_CMD0_THROTTLE, DEV_FLAGS_ANYUSE, 0, 0, 0x00000000, 0, 0 };
+#endif /* end CONFIG_BLK_DEV_IDE_AU1XXX */
+
+void board_reset (void)
+{
+ bcsr->resets = 0;
+}
+
+void __init board_setup(void)
+{
+ char *argptr = NULL;
+ u32 pin_func;
+
+#if 0
+ /* Enable PSC1 SYNC for AC97. Normaly done in audio driver,
+ * but it is board specific code, so put it here.
+ */
+ pin_func = au_readl(SYS_PINFUNC);
+ au_sync();
+ pin_func |= SYS_PF_MUST_BE_SET | SYS_PF_PSC1_S1;
+ au_writel(pin_func, SYS_PINFUNC);
+
+ au_writel(0, (u32)bcsr|0x10); /* turn off pcmcia power */
+ au_sync();
+#endif
+
+#if defined( CONFIG_I2C_ALGO_AU1550 )
+ {
+ u32 freq0, clksrc;
+
+ /* Select SMBUS in CPLD */
+ bcsr->resets &= ~(BCSR_RESETS_PCS0MUX);
+
+ pin_func = au_readl(SYS_PINFUNC);
+ au_sync();
+ pin_func &= ~(3<<17 | 1<<4);
+ /* Set GPIOs correctly */
+ pin_func |= 2<<17;
+ au_writel(pin_func, SYS_PINFUNC);
+ au_sync();
+
+ /* The i2c driver depends on 50Mhz clock */
+ freq0 = au_readl(SYS_FREQCTRL0);
+ au_sync();
+ freq0 &= ~(SYS_FC_FRDIV1_MASK | SYS_FC_FS1 | SYS_FC_FE1);
+ freq0 |= (3<<SYS_FC_FRDIV1_BIT);
+ /* 396Mhz / (3+1)*2 == 49.5Mhz */
+ au_writel(freq0, SYS_FREQCTRL0);
+ au_sync();
+ freq0 |= SYS_FC_FE1;
+ au_writel(freq0, SYS_FREQCTRL0);
+ au_sync();
+
+ clksrc = au_readl(SYS_CLKSRC);
+ au_sync();
+ clksrc &= ~0x01f00000;
+ /* bit 22 is EXTCLK0 for PSC0 */
+ clksrc |= (0x3 << 22);
+ au_writel(clksrc, SYS_CLKSRC);
+ au_sync();
+ }
+#endif
+
+#ifdef CONFIG_FB_AU1200
+ argptr = prom_getcmdline();
+#ifdef CONFIG_MIPS_PB1200
+ strcat(argptr, " video=au1200fb:panel:s11");
+#endif
+#ifdef CONFIG_MIPS_DB1200
+ strcat(argptr, " video=au1200fb:panel:s7");
+#endif
+#endif
+
+#if defined(CONFIG_BLK_DEV_IDE_AU1XXX)
+ /*
+ * Iniz IDE parameters
+ */
+ ide_ops = &au1xxx_ide_ops;
+ au1xxx_ide_irq = PB1200_IDE_INT;
+ au1xxx_ide_physbase = AU1XXX_ATA_PHYS_ADDR;
+ au1xxx_ide_virtbase = KSEG1ADDR(AU1XXX_ATA_PHYS_ADDR);
+ /*
+ * change PIO or PIO+Ddma
+ * check the GPIO-5 pin condition. pb1200:s18_dot */
+ switch4ddma = (au_readl(SYS_PINSTATERD) & (1 << 5)) ? 1 : 0;
+#endif
+
+ /* The Pb1200 development board uses external MUX for PSC0 to
+ support SMB/SPI. bcsr->resets bit 12: 0=SMB 1=SPI
+ */
+#if defined(CONFIG_AU1550_PSC_SPI) && defined(CONFIG_I2C_ALGO_AU1550)
+ #error I2C and SPI are mutually exclusive. Both are physically connected to PSC0.\
+ Refer to Pb1200/Db1200 documentation.
+#elif defined( CONFIG_AU1550_PSC_SPI )
+ bcsr->resets |= BCSR_RESETS_PCS0MUX;
+#elif defined( CONFIG_I2C_ALGO_AU1550 )
+ bcsr->resets &= (~BCSR_RESETS_PCS0MUX);
+#endif
+ au_sync();
+
+#ifdef CONFIG_MIPS_PB1200
+ printk("AMD Alchemy Pb1200 Board\n");
+#endif
+#ifdef CONFIG_MIPS_DB1200
+ printk("AMD Alchemy Db1200 Board\n");
+#endif
+#if 0
+ /* Setup Pb1200 External Interrupt Controller */
+ {
+ extern void (*board_init_irq)(void);
+ extern void _board_init_irq(void);
+ board_init_irq = _board_init_irq;
+ }
+#endif
+}
diff --git a/arch/mips/au1000/pb1200/init.c b/arch/mips/au1000/pb1200/init.c
new file mode 100644
index 0000000..27f09e3
--- /dev/null
+++ b/arch/mips/au1000/pb1200/init.c
@@ -0,0 +1,69 @@
+/*
+ *
+ * BRIEF MODULE DESCRIPTION
+ * PB1200 board setup
+ *
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc.
+ * ppopov@mvista.com or source@mvista.com
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <linux/init.h>
+#include <linux/mm.h>
+#include <linux/sched.h>
+#include <linux/bootmem.h>
+#include <asm/addrspace.h>
+#include <asm/bootinfo.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+
+int prom_argc;
+char **prom_argv, **prom_envp;
+extern void __init prom_init_cmdline(void);
+extern char *prom_getenv(char *envname);
+
+const char *get_system_type(void)
+{
+ return "Alchemy Pb1200";
+}
+
+void __init prom_init(void)
+{
+ unsigned char *memsize_str;
+ unsigned long memsize;
+
+ prom_argc = (int) fw_arg0;
+ prom_argv = (char **) fw_arg1;
+ prom_envp = (char **) fw_arg2;
+
+ mips_machgroup = MACH_GROUP_ALCHEMY;
+ mips_machtype = MACH_PB1200;
+
+ prom_init_cmdline();
+ memsize_str = prom_getenv("memsize");
+ if (!memsize_str) {
+ memsize = 0x08000000;
+ } else {
+ memsize = simple_strtol(memsize_str, NULL, 0);
+ }
+ add_memory_region(0, memsize, BOOT_MEM_RAM);
+}
diff --git a/arch/mips/au1000/pb1200/irqmap.c b/arch/mips/au1000/pb1200/irqmap.c
new file mode 100644
index 0000000..2ec64e7
--- /dev/null
+++ b/arch/mips/au1000/pb1200/irqmap.c
@@ -0,0 +1,180 @@
+/*
+ * BRIEF MODULE DESCRIPTION
+ * Au1xxx irq map table
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+#include <linux/kernel_stat.h>
+#include <linux/module.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/timex.h>
+#include <linux/slab.h>
+#include <linux/random.h>
+#include <linux/delay.h>
+
+#include <asm/bitops.h>
+#include <asm/bootinfo.h>
+#include <asm/io.h>
+#include <asm/mipsregs.h>
+#include <asm/system.h>
+#include <asm/mach-au1x00/au1000.h>
+
+#ifdef CONFIG_MIPS_PB1200
+#include <asm/mach-pb1x00/pb1200.h>
+#endif
+
+#ifdef CONFIG_MIPS_DB1200
+#include <asm/mach-db1x00/db1200.h>
+#define PB1200_INT_BEGIN DB1200_INT_BEGIN
+#define PB1200_INT_END DB1200_INT_END
+#endif
+
+au1xxx_irq_map_t au1xxx_irq_map[] = {
+ { AU1000_GPIO_7, INTC_INT_LOW_LEVEL, 0 }, // This is exteranl interrupt cascade
+};
+
+int au1xxx_nr_irqs = sizeof(au1xxx_irq_map)/sizeof(au1xxx_irq_map_t);
+
+/*
+ * Support for External interrupts on the PbAu1200 Development platform.
+ */
+static volatile int pb1200_cascade_en=0;
+
+void pb1200_cascade_handler( int irq, void *dev_id, struct pt_regs *regs)
+{
+ unsigned short bisr = bcsr->int_status;
+ int extirq_nr = 0;
+
+ /* Clear all the edge interrupts. This has no effect on level */
+ bcsr->int_status = bisr;
+ for( ; bisr; bisr &= (bisr-1) )
+ {
+ extirq_nr = (PB1200_INT_BEGIN-1) + au_ffs(bisr);
+ /* Ack and dispatch IRQ */
+ do_IRQ(extirq_nr,regs);
+ }
+}
+
+inline void pb1200_enable_irq(unsigned int irq_nr)
+{
+ bcsr->intset_mask = 1<<(irq_nr - PB1200_INT_BEGIN);
+ bcsr->intset = 1<<(irq_nr - PB1200_INT_BEGIN);
+}
+
+inline void pb1200_disable_irq(unsigned int irq_nr)
+{
+ bcsr->intclr_mask = 1<<(irq_nr - PB1200_INT_BEGIN);
+ bcsr->intclr = 1<<(irq_nr - PB1200_INT_BEGIN);
+}
+
+static unsigned int pb1200_startup_irq( unsigned int irq_nr )
+{
+ if (++pb1200_cascade_en == 1)
+ {
+ request_irq(AU1000_GPIO_7, &pb1200_cascade_handler,
+ 0, "Pb1200 Cascade", &pb1200_cascade_handler );
+#ifdef CONFIG_MIPS_PB1200
+ /* We have a problem with CPLD rev3. Enable a workaround */
+ if( ((bcsr->whoami & BCSR_WHOAMI_CPLD)>>4) <= 3)
+ {
+ printk("\nWARNING!!!\n");
+ printk("\nWARNING!!!\n");
+ printk("\nWARNING!!!\n");
+ printk("\nWARNING!!!\n");
+ printk("\nWARNING!!!\n");
+ printk("\nWARNING!!!\n");
+ printk("Pb1200 must be at CPLD rev4. Please have Pb1200\n");
+ printk("updated to latest revision. This software will not\n");
+ printk("work on anything less than CPLD rev4\n");
+ printk("\nWARNING!!!\n");
+ printk("\nWARNING!!!\n");
+ printk("\nWARNING!!!\n");
+ printk("\nWARNING!!!\n");
+ printk("\nWARNING!!!\n");
+ printk("\nWARNING!!!\n");
+ while(1);
+ }
+#endif
+ }
+ pb1200_enable_irq(irq_nr);
+ return 0;
+}
+
+static void pb1200_shutdown_irq( unsigned int irq_nr )
+{
+ pb1200_disable_irq(irq_nr);
+ if (--pb1200_cascade_en == 0)
+ {
+ free_irq(AU1000_GPIO_7,&pb1200_cascade_handler );
+ }
+ return;
+}
+
+static inline void pb1200_mask_and_ack_irq(unsigned int irq_nr)
+{
+ pb1200_disable_irq( irq_nr );
+}
+
+static void pb1200_end_irq(unsigned int irq_nr)
+{
+ if (!(irq_desc[irq_nr].status & (IRQ_DISABLED|IRQ_INPROGRESS))) {
+ pb1200_enable_irq(irq_nr);
+ }
+}
+
+static struct hw_interrupt_type external_irq_type =
+{
+#ifdef CONFIG_MIPS_PB1200
+ "Pb1200 Ext",
+#endif
+#ifdef CONFIG_MIPS_DB1200
+ "Db1200 Ext",
+#endif
+ pb1200_startup_irq,
+ pb1200_shutdown_irq,
+ pb1200_enable_irq,
+ pb1200_disable_irq,
+ pb1200_mask_and_ack_irq,
+ pb1200_end_irq,
+ NULL
+};
+
+void _board_init_irq(void)
+{
+ int irq_nr;
+
+ for (irq_nr = PB1200_INT_BEGIN; irq_nr <= PB1200_INT_END; irq_nr++)
+ {
+ irq_desc[irq_nr].handler = &external_irq_type;
+ pb1200_disable_irq(irq_nr);
+ }
+
+ /* GPIO_7 can not be hooked here, so it is hooked upon first
+ request of any source attached to the cascade */
+}
+
generated by cgit v0.10.2 at 2024-11-05 14:43:26 (GMT)